MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded JavaScript and a link farm pointing to potentially compromised WordPress upload storage suggests an attempt to redirect users to malicious sites. The primary attack pattern involves exploiting the PDF format to deliver a payload or phish users, likely initiated via spearphishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL http://asesoriazabalburu.org/azaba/files/file/7711747842.pdf In PDF document text
- http://phukientubepxinh.info/gomsu/sanpham/anh/files/pipuderifemujekabadimoj.pdfIn PDF document text
- http://carneiro-sa.pnh.pt/js/ckfinder/userfiles/files/1243890890.pdfIn PDF document text
- http://comlark.ru/userfiles/files/94979621806.pdfIn PDF document text
- http://cambridgekapurthala.com/damana/userfiles/file/50993417442.pdfIn PDF document text
- https://weblative.com/wp-content/plugins/super-forms/uploads/php/files/1895jokquqef60odgphn98mllk/fezelomenipabarutolif.pdfIn PDF document text
- http://itfkarnataka.com/cvsprojects/SSK/Source/2.0.0/images/files/17447856988.pdfIn PDF document text
- http://fc-junajted.com/upload/datoteke/wipoferap.pdfIn PDF document text
- http://dalnoboy.net/data/filestorage/upload/files/82541638954.pdfIn PDF document text
- http://www.trisad.kz/ckfinder/userfiles/files/235549449.pdfIn PDF document text
- https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/67109a9e08eunsn5odiodonedr/78488278619.pdfIn PDF document text
- https://himalayanwanderer.com/himalayan/userfiles/files/sizagotutilimebilo.pdfIn PDF document text
- http://brmhn.com/userfiles/file/20210904100701_e8hljb.pdfIn PDF document text
- http://mfcpavpos.ru/file/zojuvukudutasu.pdfIn PDF document text
- http://taihegas.com/filespath/files/20210901080107.pdfIn PDF document text
- http://sarljarry.com/userfiles/file/49832564832.pdfIn PDF document text
- https://letajicikoberce.cz/userfiles/file/vinoke.pdfIn PDF document text
- http://www.anclupnapoli.it/userfiles/file/2159085223.pdfIn PDF document text
- http://planet-for-events.de/userfiles/file/xiwali.pdfIn PDF document text
- http://leeandrewdavison.com/download/50606290987.pdfIn PDF document text
- http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137fc9160eff---zogofazidatap.pdfIn PDF document text
- https://kohphanganhotelandtour.com/userfiles/file/66937432638.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=anaconda+switch+environmentPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000c919.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC919 | 17220 bytes |
SHA-256: ac9fc9d1863545abf4708d2c70047078e1cf09bca51689baf6dc89b137b265f5 |
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font_01_sfnt_off0000f623.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF623 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010e3a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E3A | 10720 bytes |
SHA-256: c2f93e18fe45a90388b8c05a09614f9b311abef0d45ecb73d04dc7417679b3f4 |
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